I don't think you have to worry about stroking out. While it's a bit surprising your doctor did not write a script, I'm sure he had his reasons. I recently had an EKG while at the doctors office and he told me that if I had sustained high blood pressure, it would have shown on the report. Maybe your doctor feels the same way and thinks the high BP is something new for you. When was your last appointment and was your BP fine then? I also wonder how old you are. On the one hand, I want to say to trust your doctor, but then on the other hand I'd have lots of questions
Personally, I own a home BP monitor and check it a few times a day to see where I'm at. It might be something you want to look into, just to keep tabs on what your BP is running throughout the day. Obviously, you don't want a sustained BP of 160/100 - over time it will can damage organs. But, if this is a new symptom for you, if you are young, etc., your doctor may be looking into other causes (Addisons, thyroid, etc.). Regardless, I would expect him to treat it sooner rather than later. Losing weight, exercise and meds are all great ways to get the numbers down. Did he not say anything about treatment?